61 High
Your boiler's internal components have stopped communicating with each other, meaning the central control unit cannot send or receive the signals needed to heat your home.
Technical description: Bus communication error
Typical repair cost: £180-450 (including labour)
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Protect yourself from future repair bills
A boiler cover plan would cover faults like 61 — no call-out fees, no surprises.
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Parts commonly replaced
- Main PCB (Printed Circuit Board)
- Communication Interface Cable
- Display Module
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